Methylation-ring opening of 3,3-disubstituted 2,3-epoxy alcohols. Synthesis of chiral quaternary fragments for assembly of briaran diterpenes
作者:Rajiv P. Balasubramaniam、David K. Moss、Justin K. Wyatt、John D. Spence、Arvin Gee、Michael H. Nantz
DOI:10.1016/s0040-4020(97)00453-5
日期:1997.6
Two chiral quaternary carbon-containing fragments suitable for elaboration to the briaran diterpenes were obtained by regioselective methylation of functionalized 3,3-disubstituted 2,3-epoxy-1-ols. The factors which favor methylation at the more hindered position of a trisubstituted 2.3-epoxy alcohol were determined. (C) 1997 Elsevier Science Ltd.